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Finding the Fourth Proportional to 614,759.90, 921,155.70 and 404,151.80

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Solution

The fourth proportional to 614,759.90, 921,155.70 and 404,151.80 is: 605,580.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,759.90 : 921,155.70 = 404,151.80 : x
  2. Step 2: Convert to fraction form
    614,759.90/921,155.70 = 404,151.80/x
  3. Step 3: Cross multiply
    614,759.90x = 921,155.70 × 404,151.80
  4. Step 4: Simplify right side
    614,759.90x = 372,286,734,235.26
  5. Step 5: Solve for x
    x = 372,286,734,235.26/614,759.90
  6. Step 6: Final answer
    x = 605,580.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.